What happens when diaphragm contracts and relaxs
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Answer:
During inspiration, the diaphragm contracts and pulls downward while the muscles between the ribs contract and pull upward. ... During expiration, the diaphragm relaxes, and the volume of the thoracic cavity decreases, while the pressure within it increases. As a result, the lungs contract and air is forced out.
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Explanation:
When you inhale, the diaphragm contracts. This contraction creates vacuum, which pulls air to lung.When you exhale it returns to its domelike shape
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